Meal box



FIG. 1 is a perspective view of a meal box showing our new design;

FIG. 2 is a front view thereof, for which the rear view, the left side view and the right side view are the same;

FIG. 3 is a top view thereof; and,

FIG. 4 is a bottom view thereof.

The broken lines showing portions of the meal box form no part of the claimed design. 

CLAIM The ornamental design for a meal box, as shown and described. 